Complete Modern C++ - Nested Namespaces

The video tutorial explains how namespaces can be used to modularize code and how they can be nested to logically group classes and functions. It introduces C++17 features that simplify the syntax for creating nested namespaces using the scope resolution operator, eliminating the need to repeatedly use the namespace keyword. The tutorial also covers different methods to access functions within namespaces, such as using the fully qualified name, using declaration, and global using directive. Finally, it highlights the syntactic convenience provided by the scope resolution operator for programmers.

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